“[Scenarios] combine the rigour of theory and statistics with the essential flair and imagination necessary to the future of multifaceted issues embracing economy, society and the environment… Decision makers frequently blend scenarios …to generate hybrid policies…Used in this way the power of evidence based scenarios lies only partially in their accuracy: more significant is their capacity to stimulate ideas” Carrington, K. Alison McIntosh and Jim Walmsley, The Social Costs and Benefits of Migration into Australia. Department of Immigration and Citizenship. 8/8/2007